RAJASTHAN ­ PET Rajasthan PET Solved Paper-2010

  • question_answer
    Which of the following metal carbonates decomposes on heating?

    A)  \[MgC{{O}_{3}}\]

    B)  \[N{{a}_{2}}C{{O}_{3}}\]

    C)  \[{{K}_{2}}C{{O}_{3}}\]          

    D)   \[R{{b}_{2}}C{{O}_{3}}\]

    Correct Answer: A

    Solution :

     \[MgC{{O}_{3}}\]decomposes on heating to give\[MgO\] and\[C{{O}_{2}}\]while alkali metal carbonates (except \[L{{i}_{2}}C{{O}_{3}}\]) do not.


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